Acute Toxicity 09 : Biology. Any poisonous effect produced within a short period of time, usually up to 24-96 hrs., resulting in severe biological harm and often death. (Bul D11)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}